S&P 500 Gains and Losses Today: Palantir Pops Amid Hopes of End to Shutdown; Health Insurer Stocks Fall
1. Palantir shares surged nearly 9% amid government shutdown optimism. 2. Federal government is a significant customer of Palantir's analytics services. 3. Health insurers fell after Trump suggested altering healthcare payments. 4. Major U.S. indices rose, reflecting investor optimism towards a deal. 5. Palantir's performance is closely tied to government contracts and funding.